Shock-absorber eor automobile-springs



J. S. RUBERTS.

SHOCKk ABSORBER FOR AUTOMOBILE SPRINGS. APPLICATION msn JULY I7. 1915.

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JOI-IN S. ROBERTS, OF GS GOOD, IOWA, .ASSIGNOR OF ONE-HALF TO S. 4W. BREFFLE, OF OSGOOD, IOWA.

SHOCK-ABSORBEB, FOR AUTOMOBILE-SPRINGS.

Specication of Letters Patent.

Patented Aug. 8, 1916.

Application filed July 17, 1915. Serial No. 40,470.

To all whom 'it may concern:

Be it known that I, Jol-IN S. Ronn'rs, a citizen of the United States, residing at Osgood, in the county of Palo Alto and State of Iowa, have invented certain new and useful Improvements in Shock-Absorbers for Automobile-Springs; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The invention relates to improvements in shock absorbers forzautomobile springs.

The object of the present invention is to improve the construction of shock absorbers for automobile springs and to provide a simple, practical and comparatively inexpensive device of strong and durable construction, adapted to be readily applied to various automobile springs and capable of preventing the same from going down too far and of stopping too suddenly thereby relieving an automobile spring from the effects of a crushing force and greatly increasing the life of the springs.

IVith these and other objects in view the invention consists in the construction and novel combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings and pointed out in the claims hereto appended, it being understood that various changes in the form, proportion and minor details of construction may be resorted to without departing from the spirit or sacriicing any of the advantages of the invention.

In the drawing Figure 1 is a side elevation of a shock absorber constructed in accordance with this invention and shown applied to an automobile spring, Fig. 2 isa plan view of the same, Fig. 3 is a transverse sectional view on the line 3 3 of Fig. l.

Like numerals of reference designate corresponding parts in the several figures of the drawings.

In the accompanying drawing in which l is illustrated the preferred embodiment of the invention, the shock absorber comprises in its construction an auxiliary Jframe l constructed of steel and of a strength corresponding to the character of automobile or other motor vehicle on which it is to be employed and bowed upwardly in the opposite direction from an automobile spring 2,

The automobile springs 2 may be of any desired construction and although a semi-elliptic automobile spring is illustrated in the accompanying drawing the shock absorber may of course be used on a threequarter automobile spring vor a full elliptic spring if desired. The upwardly bowed auxiliary spring which arches the central portion of the automobile spring has its'terminals seated upon the automobile spring at opposite sides of the center thereof and provided with lugs or enlargements 3 for retaining clips 4 on the ends of the auxiliary shock absorbing spring l. The lugs are located at the outer sides of the clips and while they permit a ready expansion and contraction of the springs they are retained on the terminals of the auxiliary or shock absorbing springs and are prevented from becoming displaced from the' same.

The shock absorbing spring is preferably used in conjunction with upper and lower cushions 5 and 6 which are secured to the shock absorbing spring and the automobile spring by suitable fastening devices 7 and 8. The upper and lower cushions are constructed of rubber or other suitable material and fastening devices of any desired construction may of course be employed. The upper cushion is arranged upon the central portion of the shock absorbing spring 1 and the lower cushion is mounted upon the central portion of the automobile spring and is interposed between the same and the shock absorbing spring.

The shock absorbing device is adapted to prevent the automobile spring from going down too far and also from stopping too suddenly and it will relieve the automobile spring of the effect of a crushing strain or weight and greatly increase the life or durability of the automobile spring. Either or both of the cushions may be omitted when desired.

While the shock absorbing device is designed primarily for use on automobile springs and other motor vehicle springs it may be advantageously employed on simi lar springs of any vehicle.

IVhat iswelaimed is The combination with a semi-elliptic Vehicle spring, a centrally arranged cushion mounted upon the central portion of the vehicle spring, an auxiliary shock absorbing spring reversel'y curved with respect to the the downward movement of the vehicle 15 vehicle spring and arching the central porspring.

tion thereof and located above and spaced In testimony whereof I affix my signature from the said cushion and means for securin presence of two witnesses.

ing the ends of the auxiliary shock absorb- JOHN S PGBERTS ing spring to the vehicle spring at opposite i Sides of the said cushion, the latter being lVitnesses: adapted to limit the downward movement C. H. GIDDINGS, of the auxiliary spring which also limits BELLE GIDDINGS.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

